Container sleeve



FIG. 1 is a top perspective view of the container sleeve;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a second side view thereof;

FIG. 5 is a third side view thereof;

FIG. 6 is a fourth side thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a top perspective view of the container sleeve in an environment of use.

The dashed lines depict portions of the container sleeve and environment and form no part of the claimed design. 

CLAIM The ornamental design for a container sleeve, as shown and described. 